Yttrium-doped NiMo-MoO₂ heterostructure electrocatalysts for hydrogen production from alkaline seawater.

ABSTRACT: Active and stable electrocatalysts are essential for hydrogen production from alkaline water electrolysis. However, precisely controlling the interaction between electrocatalysts and reaction intermediates (H₂O*, H*, and *OH) remains challenging. Here, we demonstrate an yttrium-doped NiMo-MoO₂ heterogenous electrocatalyst that efficiently promotes water dissociation and accelerates the intermediate adsorption/desorption dynamics in alkaline electrolytes. Introducing yttrium into the NiMo/MoO₂ heterostructure induces lattice expansion and optimizes the d-band center of NiMo alloy component, enhancing water dissociation and H* desorption. Yttrium doping also increases the concentration of oxygen vacancies in MoO_2-x, which in turn accelerates the ch

SUBMITTER: Liu S 

PROVIDER: S-EPMC11742019 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature